Study on arc moving image with high frame rate CCD for low voltage apparatus

In this paper, the fiber mirrors sensor and the area scan CCD of high frame rate are developed. Using the flash memories and the TMS320c40 DSP, a special interface between computer and the CCD camera can be done. It is very important for testing system on how to increase the sampling speed of arc moving and the resolution of arc image. Meanwhile, the technology of color adjustment panel and the virtual page exchange are used to show the procedure of arc moving in software design. While using the high speed sampling system of arc moving image, a progress of striking and restriking of the low voltage apparatus is photographed. Under different gap-spacing condition, macro-dynamic image is analyzed. It is shown that the local restriking near the entrance to iron chute is the cause of arc voltage drop. This phenomenon will make the low voltage apparatus characteristics bad.